APA
Reader's Digest Association, . (1975). Illustrated family medical encyclopaedia. London: Reader's Digest Association.
Chicago
Reader's Digest Association, . 1975. Illustrated family medical encyclopaedia. London: Reader's Digest Association.
Harvard
Reader's Digest Association, . (1975). Illustrated family medical encyclopaedia. London: Reader's Digest Association.
MLA
Reader's Digest Association, . Illustrated family medical encyclopaedia. London: Reader's Digest Association. 1975.